LM63DIMA Equivalent & Substitute Parts

Part Overview

The LM63DIMA is a temperature sensor and fan control IC manufactured by Texas Instruments, designed for remote and internal temperature monitoring with integrated fan speed control. This device operates across 0°C to 125°C with ±3°C accuracy and communicates via 2-Wire SMBus protocol. The LM63DIMA is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts must maintain compatibility with the 8-SOIC package, SMBus interface, and dual-sensor temperature monitoring architecture.

Substiute Parts

LM63DIMA

Texas InstrumentsIn Stock: 7050LM63DIMA Datasheet

Current PartRFQ

LM63DIMA/NOPB

Texas InstrumentsIn Stock: 1655LM63DIMA/NOPB Datasheet

DirectRFQ

LM63CIMA/NOPB

Texas InstrumentsIn Stock: 2231LM63CIMA/NOPB Datasheet

Parametric EquivalentRFQ

ADM1032ARZ-REEL

Analog Devices Inc.In Stock: 7590ADM1032ARZ-REEL Datasheet

MFR RecommendedRFQ

ADT7461ARZ-REEL

onsemiIn Stock: 19579ADT7461ARZ-REEL Datasheet

MFR RecommendedRFQ

MAX6692MSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1016MAX6692MSA+ Datasheet

MFR RecommendedRFQ

MAX6692MSA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 910MAX6692MSA+T Datasheet

MFR RecommendedRFQ

MAX6692YMSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 939MAX6692YMSA+ Datasheet

MFR RecommendedRFQ

MAX6692YMSA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 747MAX6692YMSA+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM63DIMA are classified based on the following critical parameters that determine functional compatibility:

Package Compatibility: All substitute parts must use the 8-SOIC package (0.154", 3.90mm Width) to ensure direct PCB footprint compatibility.

Communication Protocol: All substitutes maintain SMBus interface for system integration without firmware modification.

Dual-Sensor Architecture: Substitute parts must support both local (internal) and remote (external) temperature sensing to preserve the original functionality.

Temperature Sensing Range: Substitutes must cover the 0°C to 125°C range or exceed it to maintain operational compatibility.

Supply Voltage: Substitutes must operate within or exceed the 3V to 3.6V supply range of the original part.

Accuracy Specification: Substitutes with ±3°C or better accuracy maintain measurement reliability equivalent to the LM63DIMA.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility): LM63DIMA/NOPB and LM63CIMA/NOPB are direct Texas Instruments alternatives with identical electrical specifications and 8-SOIC packaging. Both are ROHS3 compliant, addressing regulatory requirements while maintaining the original design intent. These parts are recommended for applications requiring minimal design validation.

Active Production Alternatives: ADM1032ARZ-REEL, ADT7461ARZ-REEL, MAX6692MSA+, MAX6692MSA+T, MAX6692YMSA+, and MAX6692YMSA+T are all active products with current manufacturing support. These parts maintain 8-SOIC packaging and SMBus communication protocol compatibility. All substitute parts are ROHS3 compliant and REACH unaffected, meeting modern regulatory standards.

Supply Voltage Consideration: The LM63DIMA operates at 3V to 3.6V. All substitute parts support 3V to 5.5V supply ranges, providing broader voltage tolerance. Designs operating at the lower 3V to 3.6V range remain fully compatible with all listed substitutes.

Temperature Range Coverage: The MAX6692 series (MSA+, MSA+T, YMSA+, YMSA+T) and ADT7461ARZ-REEL provide extended operating temperature ranges beyond the original 0°C to 125°C specification, offering enhanced performance margins for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can LM63DIMA/NOPB be used as a direct replacement for LM63DIMA?

A: Yes. LM63DIMA/NOPB is a direct equivalent with identical electrical and functional specifications. The primary difference is ROHS3 compliance, making it suitable for new designs and production runs requiring regulatory compliance.

Q: What is the key difference between LM63CIMA/NOPB and LM63DIMA/NOPB?

A: Both parts share identical electrical specifications, sensing temperature range, accuracy, and SMBus output. The designation difference reflects internal die or manufacturing variations, but they are functionally equivalent for system integration.

Q: Are the MAX6692 variants interchangeable with each other?

A: MAX6692MSA+, MAX6692MSA+T, MAX6692YMSA+, and MAX6692YMSA+T share identical electrical specifications and 8-SOIC packaging. The primary differences are packaging format (Tube vs. Tape & Reel) and accuracy specifications. Selection depends on procurement and assembly requirements.

Q: Does ADT7461ARZ-REEL support the same temperature range as LM63DIMA?

A: ADT7461ARZ-REEL supports -40°C to 120°C for local sensing and -55°C to 150°C for remote sensing, exceeding the LM63DIMA range of 0°C to 125°C. This extended range provides additional operational margin for temperature-sensitive applications.

Q: Can I use ADM1032ARZ-REEL in place of LM63DIMA?

A: ADM1032ARZ-REEL is compatible for applications operating within 0°C to 100°C local sensing range. Remote sensing extends to 120°C. The part maintains SMBus protocol and 8-SOIC packaging. Verify that your application does not require the full 0°C to 125°C range before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant. The original LM63DIMA is RoHS non-compliant, making compliant alternatives necessary for new designs and regulatory requirements.

Q: What packaging options are available for the MAX6692 series?

A: MAX6692MSA+ and MAX6692YMSA+ are supplied in Tube packaging. MAX6692MSA+T and MAX6692YMSA+T are supplied in Tape & Reel (TR) format. Both formats maintain identical electrical specifications and 8-SOIC package dimensions.